Run cron with SNS notification on failure

run.sh

#!/bin/sh
#
# Usage: Add below to crontab -e
# * * * * run.sh script
#
# This would run npm --prefix /path/to/app run script
if [ -z "$1" ]
  then
    echo "No script specified"
    exit;
fi

cmdoutput=$(/usr/bin/npm --prefix /path/to/app run $1 2>&1)
exitcode=$?

echo "$cmdoutput"

if [ $exitcode -ne 0 ]; then
  aws sns publish \
      --topic-arn "${AWS_NOTIFY_TOPIC}" \
      --message "cron $1 failed with error: ${exitcode}\n\n${cmdoutput}"
  exit $exitcode
fi